Amenability of nitrilotriacetic acid to biodegradation in a marine simulation |
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| Authors: | PWW Kirk JN Lester R Perry |
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| Institution: | Public Health Engineering Laboratory, Department of Civil Engineering, Imperial College, London, SW7 2BU, UK |
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| Abstract: | The behaviour of the detergent builder nitrilotriacetic acid (NTA) has been studied in the presence of a marine bacterial population potentially associated with a sewage discharge to coastal waters. Additions of 500 μg l?1 NTA were made over a period of 80 days and 7500 μg l?1 NTA over 40 days in both aerobic and anoxic environments. It was concluded that NTA was not degraded at either concentration under aerobic or anoxic conditions, despite the presence of a significant bacterial population under aerobic conditions. Possible effects of NTA recalcitrance and its accumulation in coastal marine waters are discussed. |
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